video card problems

[wscrivens]

As usual, I spoke too soon. We were watching a movie last night, and it looked as though, during moderate action scenes, it was dropping whole frames - the whole picture would stop for a split second, and then take up again whith the person/car/whatever having moved a few centimeters ahead. Later I looked at a live newscast, and the crawl on the bottom of the screen was jumping about a letter's width every few seconds.

I think you were suggesting a while back that this might be due to CPU load, but I don't know. I have a 2.8 GHz pentium 4 with 768 MB of memory. When I looked at CPU loading (with a video playing in a window) it never got above 85% and was mostly around 45-65%.

I think I will experiment with getting rid of unneeded services that are running in the background. This is a vanilla Windoes XP istallation, and the PC is only used for the TV, so there are several that can be stopped. I'll report on progress latr, but it may have to wait until next weekend for me to get enough time to be methodical about it.

Thanks for the tip on the gamma correction. That was one of the minor annoyances I was planning to address once we got the picture stable.

Walt

[daza67]

VMR9 is very sensitive to cpu usage and will drop frames if something is causing spikes in cpu usage. See here: http://forums.nextpvr.com/showthread.php?t=17265&page=3

If you have a nvidia card you may want to try vmr9 yuv mixing mode. This has lower cpu requirements and gives very smooth playback. You will need to change back to the dx9c quartz.dll for this to work. It currently has some disadvantages like no osd but video playback quality is fantastic.

See here: http://forums.gbpvr.com/showpost.php?p=1...stcount=25

Csy,

I'm interested if you have tried the yuv mixing mode with your nvidia card.

[csy]

If your using a widescreen TV then it is highly likely that you are using high screen resolution, but the 6200 is a low spec card and will struggle to cope with resolutions higher than SD (720x576 or 720x480).

As an experiment, try using SD resolution (I realise the picture quality will be poor) and see if the freezing proplem stops.

I have run into this problem with my ATI 9550 when I replaced my SDTV with a widescreen LCD, and found the 9550 struggles to perform aspect ratio correction at high resolutions. My temporary workaround is to use the native LCD high-resolution but disable the video decoder aspect ratio correction by configuring Purevideo to display type - Anomorphic/Raw and instead use GBPVR 'auto' aspect ratio (which changes display size instead of using aspect ratio correction). This is a 'fudge' because it doesn't work on DVDs or h.264 videos.

Daza,
I finally got my money back on the Legend 6600GT, so I don't have it anymore. I'm working on a whole system upgrade over time, starting with an Albatron 7600GS PCI-E which I've just purchased. However I can't try it out until I purchase a PCI-E motherboard.

YUV mixing mode - Sub says it is now native on VMR Custom Renderer in GBPVR 0.97.13, and I've tried it but found 'auto' aspect ratio does not work on VMR Custom Renderer, and if I enable video decoder aspect ratio correction then i still have freezing/skipping due to 9550 card not coping.

[daza67]

YUV mixing mode - Sub says it is now native on VMR Custom Renderer in GBPVR 0.97.13, and I've tried it but found 'auto' aspect ratio does not work on VMR Custom Renderer, and if I enable video decoder aspect ratio correction then i still have freezing/skipping due to 9550 card not coping.

I meant to post the thread link rather than single post link http://forums.nextpvr.com/showthread.php...post127863

From what I understood the yuv mixing only works under the straight vmr9 setting. If you still have osd's during video playback then it is not using yuv mixing ! Also in my case using the old dx9b quartz.dll prevented this mode.

[sub]

YUV mixing mode - Sub says it is now native on VMR Custom Renderer in GBPVR 0.97.13,

Incorrect.

From what I understood the yuv mixing only works under the straight vmr9 setting. If you still have osd's during video playback then it is not using yuv mixing ! Also in my case using the old dx9b quartz.dll prevented this mode.

Correct.

[csy]

Oops - sorry.

That'll teach me for only skim reading that thread.

[daza67]

A lot of users here are using the old dx9b quartz.dll to overcome vmr9 jittery ff/rr playback issues. It just makes me wonder what other deinterlacing issues this is actually introducing.

Video quality using yuv mixing and the native dx9c quartz.dll on my hardware is stunning using the default nvidia purevideo settings. Just a pity about the lack of OSD's !

[csy]

Please forgive me for side-tracking this thread but Daza - how you you enable YUV mixing mode?

I have put DX9c quartz.dll back in and set YUVmixingMode to true in config.xml and using VMR9 renderer, but still get OSD.

[daza67]

Csy,

Here are the appropiate lines from my config.

<VMRWindowedMode>true</VMRWindowedMode>
<VMRDeinterlaceMode>auto</VMRDeinterlaceMode>
<VMR9CustomAllocatorRenderer>false</VMR9CustomAllocatorRenderer>
<VMRPreferYUVMixing>true</VMRPreferYUVMixing>
<VMRYUVDynamicDecimateBy2>false</VMRYUVDynamicDecimateBy2>

quartz.dll version is 6.05.2600.2749

Disabling hardware accelleration in your video decoders would probably break this mode.

Some info from msdn http://msdn.microsoft.com/library/defaul...ngmode.asp

[csy]

Thanks Daza,

I've got all that and still seeing OSD.

Do you need the patched nativeutilities.dll if your running 0.97.13 ?